alternate ntp: implement searchbox api for instant overlay to adopt themes

chrome/browser/instant/instant_loader.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/instant/instant_loader.h"
 
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/instant/instant_controller.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/thumbnails/thumbnail_tab_helper.h"
@@ skipping 334 matching lines @@
 }
 
 void InstantLoader::SendAutocompleteResults(
     const std::vector<InstantAutocompleteResult>& results) {
   content::RenderViewHost* rvh =
       preview_contents_->web_contents()->GetRenderViewHost();
   rvh->Send(new ChromeViewMsg_SearchBoxAutocompleteResults(rvh->GetRoutingID(),
                                                            results));
 }
 
+void InstantLoader::SendThemeBackgroundInfo(
+      const ThemeBackgroundInfo& theme_info) {
+  content::RenderViewHost* rvh =
+      preview_contents_->web_contents()->GetRenderViewHost();
+  rvh->Send(new ChromeViewMsg_SearchBoxThemeChanged(rvh->GetRoutingID(),
+                                                    theme_info));
+}
+
+void InstantLoader::SendThemeAreaHeight(int height) {
+  content::RenderViewHost* rvh =
+      preview_contents_->web_contents()->GetRenderViewHost();
+  rvh->Send(new ChromeViewMsg_SearchBoxThemeAreaHeightChanged(
+      rvh->GetRoutingID(), height));
+}
+
 void InstantLoader::OnUpOrDownKeyPressed(int count) {
   content::RenderViewHost* rvh =
       preview_contents_->web_contents()->GetRenderViewHost();
   rvh->Send(new ChromeViewMsg_SearchBoxUpOrDownKeyPressed(rvh->GetRoutingID(),
                                                           count));
 }
 
 void InstantLoader::OnActiveTabModeChanged(bool active_tab_is_ntp) {
   content::RenderViewHost* rvh =
       preview_contents_->web_contents()->GetRenderViewHost();
@@ skipping 105 matching lines @@
                                            content::WebContents* new_contents) {
   DCHECK_EQ(old_contents, preview_contents_->web_contents());
   CleanupPreviewContents();
   // We release here without deleting so that the caller still has the
   // responsibility for deleting the TabContents.
   ignore_result(preview_contents_.release());
   preview_contents_.reset(TabContents::FromWebContents(new_contents));
   SetupPreviewContents();
   controller_->SwappedTabContents(this);
 }